John felt



' odem I J. FELT.

SASH HOLDER.

Patented Oct. 2, 1883.,

filgllh 1" 15.

WITNESSES INVENTOR ATTORNEYS NrrEn- STATES JOHN FELT, OF CLAYTON, NElV YORK.

SASH-HQLDER.

SPECIFICATION forming part of Letters Patent No. 286,125, dated October 2, 1883,

- Application filed July 29,1882. (Modehl To all whom it may concern.-

Be it known that 1, JOHN FELT, a citizen of the United States, and a resident of Clayton, in the county of Jefferson and State of New York, have invented a new and valuable Improvement in 'Window and Sash Locks; and I do hereby declare that the following is a full, clear, and exact description of the construction and ope 'ation of the same, reference being had to the, annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a face view of a sash showing my lock. Fig. 2 is a similar view, having the cam removed. Figs. 3 and 4 are detail views, and Figs. 5 and6 are modifications of the eccentric and sash-plate.

This invention has relation to sash-holders; and it consists in the construction and novel arrangement of parts, as will behereinafter fully described, and particularly pointed out in the claim appended.

In the accompanying drawings, the lctterA designates the sash-bead of the window-frame, and B the side bar of the sash-frame. represents the sash-plate, composed of the marginal rib or friction-plate Z, having the wedge or inclined surfaces .2 w on its inner side, and further provided with a flange, (I, through which is made a slot, 0, of sufficient vertical and lateral extent to allow the plate to move up and down, as well as sidewise, with reference to a central pivot-screw, On this screw is pivoted an eccentric, H, having athu1nb-piece or handle, 7;. The screw 9 passes through the slot 6 of the sash-plate, and holds the eccentrio in position against the flange d. m is a notch in the side or angle of the slot 0, one side of which-has such an elevation from the horizontal that whenfalling on the pin 12,

driven into the sash-bar just below it, it will slide thereon, carrying the sash-plate 0 downward and back from the sash-bead A. The location of the notch m is such that when the saslrplate O is suspended on the pin nthe engagement-edge'of the marginal rib Zwill be vertical. At the outer edge of the plate 0 is formed a marginal. rib or friction-plate, Z, the outer wall or bearing of which is a plane surface and extends in the vertical direction, and is designed to engage the saslrb'ad. The inner shoulder or bearing-wall may be a flat surface also, parallel with the outer, as shown at Z, Fig.6, but is preferably made as shown at z w in Figs. 1, 2, and 3 of the drawingsthat is, double inclined-so that the marginal ribshall consist of an upper wedge-bearing, z, and a lower"wedgebearing, w, joined at about the middle of the rib by their inner ends, as indicated in the drawings. The inclined bearing of the upper wedge is steeper than that of the lower wedge, its angle being designed to more than compensate for the falling back of the edge of the eccentric when turned so as to bring its shorter radii toward the rib or friction-plate, caused by attempting to raise the sash without reversing the eccentric. The, fastening is designed to be used on the righthand side of the window; but it can be used on the left-hand side also, or 011 the sash-bead; hen the eccentric is turned to bring its edge into engagement, it acts in a horizontal direction against the marginal rib of the slotted plate, and presses the same against the sashbead without any descent of the sash, which is forced horizontally in the opposite direction. Should the eccentric not have been sufficiently turned, however, and the sash commence to fall, the eccentric will roll on the lower wedge, 20, (or on the flat rib Z, should that construc tion be used,) of the rib or frictiolrplate 1,

which will not descend, owing to its friction against the casing, and because there is nothing acting on it to cause it to move downward except its own gravity. The moment the eccentric rolls on the inclined bearing thesash becomes tightened both by the action of the wedge and that of the eccentric, and even if the eccentric should slide,.instead of rolling,

the wedge 10 will come into action and secure the sash, preventing it from falling.

By the employment of both of the eccentric and sliding wedge-plate I am enabled to use a cam of comparatively small eccentricity, which has great powerto act on the plate and easing. Ordinarily the eccentric presses against both wedges, the lower, serving, effectively to prevent accident in case the cam should not turn in descending. In this manner the certainty of the fastening is provided for, even when operated withoutmuch care. As it is desirable that the upper sash may be securely fastened sash. securely locked down.

without any descent thereof in the operation, the means of doing so are provided for by the wide slot in flange (1, allowing the sash-plate to move in a direction exactly horizontal, which it must do when the sash is held from falling during the operation of fastening. In order to raise and lower the sash freely, the thumbpiece or handle should be thrown over toward the sash-bead, so that the eccentric will recede from the marginal rib and the sash-plate fall, bringing the notch m upon the pin it, upon which it will slide back from the casing, securing the latter from wear and injury. The object of the upper wedge, z, is to provide means for effectively locking the sash down when required. The sash having been lowered,lhe eccentric is well turned, so that it is forcibly pressed against the wedges at their meeting-point. If, now,an attempt be made to raise the sash, the eccentric will commence to roll upward on the upper wedge. This, were it not for the upper wedge, would take off the pressure on the casing; but the steepness of the upper inclined plane a little more than compensates for the receding of the cam, so that a very powerful pressure is exerted on the casing by the upward movement, and the \Vhen the rib of the sashp'late is fiat-faced on both sides, the handle of the cam is to be placed on the side of it opposite the shortest radius, in which case it will act against the rib of plate whichi ever way it may be turned. \Vhen the rib l is not wedge-shaped, as at z w, the sash is fastened up by carrying'the handle downward, and it is fastened down by turning the cam in the opposite direction; but with the double-wedge wall 2 wthe cam is to be turned only in one direction,whether inlocki-ng down or up. Y

' A modification of the eccentric is shown by Fig. 5 of the drawings, the contour of which is that of a spiral, instead of a circle. be seen that this form brings the longest and shortest radii side by side, so that the full amount of eccentricity is not obtained without an entire revolution of the eccentric, the two t iumlo-pieces 7" 7c permittingthis, by which means the power of the eccentric is doubled,

It will and is nearly the same in one position as in another, and there are no dead-points at all.

A sash-holder consisting of a sliding bent and folded pressure-plate provided with a notched and folded elastic facingand an elongated s1ot,a body-piece, and an eccentric-lever so arranged that by pulling down on the eccentric the pressure-plate will be forced against the sash-strip and make a secure fastening at any point, is old. A double-beveled key similar in form to the flange 1 z w has'been combined with a case holding thekey with its flange and containing a friction-roller, as

,shown in Patent No. 112,985, of March 21,

1875. A plate having a double-inclined slot, through which the fastening-screw passes into the sash andforms the pivot for an eccentriclever, has been provided on one side with a rib or shoulder, the outer edge of which is plane and the inner .edge composed of two in- .clined surfaces extending from the ends toward the middle, and that a face-plate coni structed with a segmental ratchet on its face, and with a recess underneath, in which an an gular plate slides when acted upon by an eccentric-disk, which is pivoted on the aforesaid face-plate and operated by a handle and these constructions, broadly, herein.

, Having described my invention ,what I. claim asnew, and desire to secure by Letters Patent,

A slotted sash-plate having a marginal rib or frictioi'i-plate, Z 2 10, along its engagementedge, operated in connection with an eccentric, H, and awide slot,c, formed with a notch,

m, having an inclined upper edge to engage the pin a in the saslrbar, whereby said sash plate will slide diagonally downward and backward from the sash-bead when relieved from the pressure of the eccentric, substantially as specified. i

In testimony that I claim the above I have hereuntosubscribed my name in the presence of two witnesses.

JOHN FELT.

Vitnesses:

EDWARD O. Rocn'ns,

FRED L. AMEs,

ratchet-bar, isalso old, and I claim none of 

